Cognos rank olap

[cognos05]

Hi ,

I got thsi syntax froma prior post .

rank( [Qty] DESC tuple [2020] within set  [Territory])

this ranks my teritories on rows for 2020 by qty

say if i want to rank on multiple dimensions , I was not able to add some additional elements to tuple

like


rank( [Qty] DESC tuple( [2020] ,[Product1]) within set  [Territory])

cant we add more members to tuple for the purpose , how would you handles this .

Thanks,